--- MITgcm/doc/README 1998/04/24 15:28:21 1.4 +++ MITgcm/doc/README 1998/06/16 23:04:39 1.7 @@ -1,20 +1,80 @@ -$Header: /home/ubuntu/mnt/e9_copy/MITgcm/doc/README,v 1.4 1998/04/24 15:28:21 cnh Exp $ +$Header: /home/ubuntu/mnt/e9_copy/MITgcm/doc/README,v 1.7 1998/06/16 23:04:39 cnh Exp $ MITgcmUV Getting Started ======================== o Introduction -o Install - tar -xvf ... - cd tools - genmake.dec - cd ../bin - ln -s ../tools/Makefile.dec makefile - make depend - make - setenv PARALLEL 1 - ../exe/barrier + This note is a guide to using the MIT General Circulation Model Ultra Verstaile + implementation, MITgmcUV. MITgcmUV is a Fortran code that implements the + algorithm described in Marshall et. al. 1997, Hill, Adcroft, ... + The MITgcmUV implementation is designed to work efficiently on all classes + of computer platforms. It can be used in both a single processor mode + and a parallel processor mode. Parallel processing can be either multi-threaded + shared memory such as that found on CRAY T90 machines or it can be multi-process + distributed memory. A set of "execution enviroment" support routines are + used to allow the same numerical code to run on top of a single-process, multi-threaded + or distributed multi-process configuration. -o References +o Installing + To setup the model on a particular computer the code tree must be created + and appropriate compile and run scripts set up. For some platforms + the necessary scripts are included in the release - in this case follow + the steps below: + + 1. Extract MITgcmUV from the downloadable archive + tar -xvf MITgcmUV.2.0.tar + + 2. Create platform specific make file + For example on a Digital UNIX machine the script "genmake.dec" can + be used as shown below + + cd MITgcmUV.2.0/tools + genmake.dec + cd ../bin + ln -s ../tools/Makefile.dec makefile + + 3. Now create header file dependency entries + make depend + + 4. Compile code + make + + 5. Run baseline test case + setenv PARALLEL 1 + ../exe/MITgcmUV.2.0 + +o Running + - Input and output files + + Required files + ============== + The model is configured to look for two files with fixed names. + These files are called + "eedata" and "data". + The file eedata contains "execution environment" data. At present + this consists of a specification of the number of threads to + use in X and Y under multithreaded execution. + + - Serial execution + + - Parallel execution. Threads + nSx, nSy + setenv PARALLEL n + nTx=2, nTy=2 + + - Parallel execution. MPI + mPx, nPy + dmpirun + + - Parallel execution. Hybrid + +o References + Web sites - HP + for doc Digital + SGI + Sun + Linux threads + CRAY multitasking + PPT notes